Respuesta :

Sum of all four angles is 360, and M and N are equal. so, 
64 + 108 + M + N = 360
172 + 2M = 360   [ M = N ]
2M = 360 - 172
2M = 188
M = 188/2
M = 94

In short, Your Answer would be Option C

Hope this helps!
The answer would be 94
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